<!DOCTYPE html>
<html>
    <head>
        <script src="../vue.global.js"></script>
    </head>
    <body>
        <button @click="increment">
            {{count}}
        </button>
        <script setup> 
            import {ref} from vue
            const count = ref(0)

            function increment(){
                count.value++
            }
       </script>
    </body>
</html>